MPC3000 color registration off only half the page

[copyaction]

Looking at the sample images the color reg is off for the top half of the page or the bottom depending on the orientation.
(Most noticeable on the very bottom line of print on the sample image)

Only has 7,000 color prints and 9,000 b&w prints total.
I thought the adjustments would work for the entire page so what could cause half off?

[teebee1234]

Re: MPC3000 color registration off only half the page

I'm guessing the top of the letter is the lead edge of the paper feed direction? If so, then there is an issue with the subscan registration. If you print out a 1 dot test pattern, you will see a gradual shift of the cmy away from the bk the further you go towards the trail edge. I used to see this more on the old 3245c types, not on this model. Are the music sensors clean and the colors fairly solid? If you have another mfp in the same product range, swap out the ITB before you try and make any sp adjustments.

[SargeNZ]

Re: MPC3000 color registration off only half the page

Where the hell do you find an MPC3000 with only 9k/7k?

[turbojetboy]

Re: MPC3000 color registration off only half the page

Where the hell do you find an MPC3000 with only 9k/7k?

Possibly because its had the old " all clear" - and that would also explain the weird reg issues. Just a guess.

[copyaction]

Re: MPC3000 color registration off only half the page

Possibly because its had the old " all clear" - and that would also explain the weird reg issues. Just a guess.

Is that true?
I have only had 1 other service call on this customers machine last year for a non-responsive touchscreen which I replaced but I was not aware the counters could be reset.

[turbojetboy]

Re: MPC3000 color registration off only half the page

A full nvram clear will 0 the counters all meters etc. It also causes untold havoc, particularly with the MPC range. Your counters seem very low for a machine thats approx 7 years old. You may want to get the birth certificate out from the front door and check over all the values. Then try a forced line posn adj, mode c first, then mode a. This is assuming the overall cq is strong and the itb and id sensor array is in great shape.

[copyaction]

Re: MPC3000 color registration off only half the page

Sorry I wasn't clear on the direction of the paper here. It is being fed 11 x 8 1/2 so it is the bottom of the page closest to the operator side where the image is bad, not the lead edge.

[slimslob]

Re: MPC3000 color registration off only half the page

Looks to me like the skew adjustment is off. Scan line for one or more color is not parallel to the black. Proper forced line position adjustment should be able to correct. If not then you are going to have to manually adjust the mirror motor positions to allign them.

[Tonerbomb]

Re: MPC3000 color registration off only half the page

What does the color test pattern look like?? (printer sp's 1103-002)

[teebee1234]

Re: MPC3000 color registration off only half the page

Sorry I wasn't clear on the direction of the paper here. It is being fed 11 x 8 1/2 so it is the bottom of the page closest to the operator side where the image is bad, not the lead edge.

In that case, then your main scan magnification is off. Do you have the birth certificate? Check the settings against that if so, otherwise you will need to tweak them. That leads back to what others have said, was there a memory clear?

This is from the Knowledge Base and pertains to this model.....

Main scan direction magnification is faulty

The main scan direction magnification is faulty, and I want to adjust it.
Cannot adjust using the SP mode write magnification adjustment (SP2-102).


[Cause]
The main scan adjustment location (SP mode No) is different.
[Resolution]
Adjust using 2-point measurement (SP2-185-001)

----------------------------------------------------------------------------------------------------------------------
I've also attached a bulletin, reference the main scan errors and solutions

[copyaction]

Re: MPC3000 color registration off only half the page

UPDATE - got there today and it was working fine, customer says in the morning it is sometimes OK but by the afternoon all prints show the defect.
I'm thinking if any of the adjustments are off it should show up bad all time?

[Llama God]

Re: MPC3000 color registration off only half the page

A full nvram clear will 0 the counters all meters etc.

You mean 5801-001? That doesn't reset the electronic counter for the machine, does it?

[slimslob]

Re: MPC3000 color registration off only half the page

You mean 5801-001? That doesn't reset the electronic counter for the machine, does it?

No it does not. It does, however, clear all engine settings. If you do not have the machine birth cirtificate, a non-default printout, or a backup of the NVram your looking at spending a lot of time getting image quality back to where forced line position will finish the job.

[Llama God]

Re: MPC3000 color registration off only half the page

No it does not. It does, however, clear all engine settings. If you do not have the machine birth cirtificate, a non-default printout, or a backup of the NVram your looking at spending a lot of time getting image quality back to where forced line position will finish the job.

Thought not, but I was a bit worried! I've been to machines which have had this done to them before and it's a shocker. Some people shouldn't be allowed out of a workshop.

[andy227]

Re: MPC3000 color registration off only half the page

In this particular case it seems like a simple forced line adjustment 2111-003, 001, 002, end of story. It happens a lot on these machines.